I have a 2006 3.3L HPDI. I'll be adding a water pressure gauge to the display. My engine has the white NMEA connector on the right side. There are also suppose to be two electrical connectors on the left side; one marked "S" for speed and another marked "P" for pressure. Pressure sensors can be connected to these to add speed and pressure info to the NMEA engine output. I've looked hard for these connectors but can't find them anywhere. I know 2005/2006 was when NMEA was added to the HPDI engines. Everything I've researched indicates if I have the NMEA connector then the engine should have the S and P connectors as well.
Could it be some 2006 engines just didn't have the S and P connectors? Maybe the connectors are hidden way up inside somewhere? Any ideas?